/* The copyright in this software is being made available under the BSD
 * License, included below. This software may be subject to other third party
 * and contributor rights, including patent rights, and no such rights are
 * granted under this license.
 *
 * Copyright (c) 2010-2013, ITU/ISO/IEC
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
 *    be used to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef X265_NALWRITE_H
#define X265_NALWRITE_H

#include "TLibCommon/TypeDef.h"
#include "TLibCommon/TComBitStream.h"
#include "TLibCommon/NAL.h"

namespace x265 {
// private namespace

/**
 * A convenience wrapper to NALUnit that also provides a
 * bitstream object.
 */
struct OutputNALUnit : public NALUnit
{
    /**
     * construct an OutputNALunit structure with given header values and
     * storage for a bitstream.  Upon construction the NALunit header is
     * written to the bitstream.
     */
    OutputNALUnit(NalUnitType nalUnitType)
        : NALUnit(nalUnitType)
        , m_bitstream()
    {}

    void resetToType(NalUnitType nalUnitType)
    {
        m_nalUnitType = nalUnitType;
        m_bitstream.clear();
    }

    TComOutputBitstream m_bitstream;
};

uint8_t *write(const OutputNALUnit& nalu, uint32_t& packetSize);
void writeRBSPTrailingBits(TComOutputBitstream& bs);

void inline NALUnitEBSP::init(const OutputNALUnit& nalu)
{
    m_nalUnitType = nalu.m_nalUnitType;
    m_temporalId = nalu.m_temporalId;
    m_reservedZero6Bits = nalu.m_reservedZero6Bits;
    m_nalUnitData = write(nalu, m_packetSize);
}
}

#endif // ifndef X265_NALWRITE_H
